Unit 'Classes' Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] [#rtl]


Creates a file stream.


Source position: classesh.inc line 1480

public constructor TFileStream.Create(

  const AFileName: string;

  Mode: Word


constructor TFileStream.Create(

  const AFileName: string;

  Mode: Word;

  Rights: Cardinal



Create creates a new instance of a TFileStream class. It opens the file AFileName with mode Mode, which can have one of the following values:

fmCreate TFileStream.Create creates a new file if needed.
fmOpenRead TFileStream.Create opens a file with read-only access.
fmOpenWrite TFileStream.Create opens a file with write-only access.
fmOpenReadWrite TFileStream.Create opens a file with read-write access.

These constants (except fmCreate) can be OR-ed with the following to specify how sharing and file locking is supposed to be handled:

fmShareCompat Open file in DOS share-compatibility mode.
fmShareExclusive Lock file for exclusive use.
fmShareDenyWrite Lock file so other processes can only read.
fmShareDenyRead Lock file so other processes cannot read.
fmShareDenyNone Do not lock file.

Note that sharing is advisory on Unix-like platforms.

After the file has been opened in the requested mode and a handle has been obtained from the operating system, the inherited constructor is called.


If the file could not be opened in the requested mode, an EFOpenError exception is raised.

See also



Base class for streams.



The filename of the stream.



Create a handlestream from an OS Handle.

Documentation generated on: Jul 22 2024